Are you looking at a particular region of the state? If not, there are simply too many options to list - although, as a general rule, I'd recommend a state park. If you could be more specific, you'll likely get more specific info as there are countless camping opportunities around the state.

In my opinion, the best place to camp and FF is on the banks of slate run just outside of slate run PA. The best spot is found by following the black forest trail from its trailhead on slate run road down to the creek. There are campsites on either side of the creek. It is primitive tent camping only with no facilities, you are bassically in the middle of no where. This is the best wild trout, freestone fishing in PA. Scenerey is impossible to beat. There are multiple sites along slate run and you can even backpack from one to another for a more enjoyable experience. There are also a number of roadside campsites available with permits in the area and close to fishing. Pine creek is within walking distance also. Its more like 3.5-4 hrs from philly but completley worth it. Message me if you want more info.